NK TECHNOLOGIES VTU Series Instructions

Specifi cations
Power Supply 24VAC/DC External Power
(22-26VDC), <2VA
(Note: Output and power supply
negatives are not isolated).
Use class 2 power supply
Voltage Measurement 15, 25, 50, 60, 120, 150, 240, 300,
400, 500 and 600VAC or DC
Frequency Range 0 - 5KHz
Output 4–20mA (capped at 31mA max)
0-5VDC (capped at 7.75VDC)
0-10VDC (capped at 11.5VDC)
Response Time 500 ms (to 90% value)
Accuracy < 1% Full Scale
Loading 4-20mA: < 400 ohm
0-5/10V: >50K ohm
Isolation Voltage 2500 Volts
Operating Temp. -20°C to 50°C
Enclosure UL94V-0 Rated
Environmental -4 to 122 ° F
(-20 to 50° C),0–95% RH
Pollution Degree 2
Altitude to 2000 meters
Listings Designed to meet UL/cUL, CE
For products intended for the EU market, the following is ap-
plicable to the CE compliance of the product:
The VTU series comply with EN 61010-1 CAT III 600V max
measurement category. Use 24 V input power and fuse at 5 amps.
Power source overvoltage category I as defi ned per EN 61010-1
Warning! Risk of danger
Safe operation can only be guaranteed if the
transducer is used for the purpose for which it
was designed and within the limits of the techni-
cal specifi cations. When this symbol is used, it
means you must consult all documentation to
understand the nature of potential hazards and
the action required to avoid them.
Warning! Risk of electrical shock
When operating the transducer certain parts may
carry hazardous live voltage (e.g. primary con-
ductors, power supply). The transducer should
not be put into operation if the installation is not
complete.
Model Number Key
VTU A - 420 - 24U - DIN
MONITORED VOLTAGE RANGE:
A - 15V
B - 25V
C - 50V
D - 60V
(surrounding sensor)
E - 120V
F - 150V
G - 240V
H - 300V
I - 400V
J - 500V
K - 600V
SENSOR TYPE:
VTU - AC/DC Voltage Transducers
Know Your Power
Other NK Technologies Products Include:
AC & DC Current Transducers
AC & DC Current Operated Switches
1φ & 3φ Power Transducers
Current & Potential Transformers (CTs & PTs)
3511 Charter Park Drive, San Jose, CA 95136
800-959-4014 or 408-871-7510 Phone
408-871-7515 FAX
sales@nktechnologies.com, www.nktechnologies.com
CASE STYLE:
DIN - DIN rail compatible
POWER SUPPLY:
24U - Nominal 24 VAC/DC
OUTPUT:
420 - 4-20mA
005 - 0-5VDC
010 - 0-10VDC
INSTRUCTIONS
VTU SERIES
AC/DC Voltage Transducers
Ranges 15, 25, 50, 60, 120, 150,
240, 300, 400, 500 and 600 Volts
4-20mA, 0-5/10VDC Outputs
Quick "How To" Guide
1. Ensure correct sensor model was chosen for Moni-
tored Voltage of application.
2. Mount the sensor to a DIN rail using integrated
mounting clip on backside of transducer.
3. Connect monitored voltage (5) & (6) and output
wiring using 24-10 AWG copper wires insulated to
75/90°. Refer to Specifi cations section for voltage
and impedance recommendations.
4. Connect 24VAC or DC power supply fused to 5 amp
to term. 3-4, 24-12 AWG copper. Use twisted pair
for CE compliance. Tighten all conenctions to 5-7
in/lbs torque.
Do not connect power and signal together.
VTU-DIN Instruction Sheet Rev 3 03/19 P/N 292180012